Club 80-90 Forums

I put a new Meyle slave on and it was rubbish.

multisi wrote:I would have put a new disc in, can they be cleaned up ? The Haynes manual says clutch slip and clutch drag can be due to a contaminated friction disc.

Read Haynes and it shows how to tell if the disk was too worn, mine wasn’t. I cleaned it with pressure washer and dried it. Figured a few hill starts would burn off any excess contamination.

I have the opposite now anyway, it ain’t slipping!

937carrera wrote:Have you tried putting the old slave back on ?

For multisi - Clutch discs can be cleaned up with brake cleaner

The old slave is toast.
I think the new one is a meyle one, was beginning to get suspicious about it

Im only going on what the Haynes manual says- clutch drag - difficult to engage first or reverse could be due to contamination of the disc. The meyle slave I received had a rubber boot that didn't fit and was split , I couldn't bleed it, it would keep loosing pressure, the master was crap aswell, that had an external seal that leaked all the fluid out, I put a new vw seal in and it seemed ok but later changed it for a brickwerks one.

Was the flywheel cleaned?

Have a read here for other ideas

http://forum.club8090.co.uk/viewtopic.php?f=37&t=137883

Shame you can't refit the old one, new parts can be bad, it was just an idea even though the throw of the piston is equal to the other one you tested

tobydog wrote:Was the flywheel cleaned?

Yes

937carrera wrote:Have a read here for other ideas

http://forum.club8090.co.uk/viewtopic.php?f=37&t=137883

Shame you can't refit the old one, new parts can be bad, it was just an idea even though the throw of the piston is equal to the other one you tested

Yeah that was a good read.
New slave, new master, bled a hundred times, I am back to looking at clutch/release bearing etc. Everything undone ready to drop box in the morning.
Thanks for the advice, keep it coming though!

Make sure the guide sleeve is in good condition, I put a bit of copaslip on mine when I fitted it.

I dropped the box on mine because of a creaky pedal caused by a worn guide sleeve. Damaged the clutch pipe when I dropped the box and then had to go through the whole routine again because the release bearing wasn't correctly located. I had only had the van 2 days, so it was a steep learning curve, dropping the box on your own isn't the easiest thing to do. Still you're getting plenty of practice so it'll almost jump out on command now.

Leave the CV bolts off for now

guide tube shouldn't be lubricated, the release bearing has a graphite/nylon bearing inner surface which runs on the steel guide tube - putting lube on tube just attracts clutch dust and forms a grinding paste which causes wear to the tube which can then impede easy movement of the bearing
lube is required at tip of fork/back of thrust plate of bearing interface, I put a dab in the back of the knee where the spring clip sits/pivots as well

I did consider that Aidan, thought about the dust and knew it wasn't standard. Decided to go ahead as I'm a bit fed up of having to whip gearboxes off because the £5 guide tubes are worn, not just T25's

pi Quattro - I suggest you follow Aidans advice

Box out again
The thrust plate is correctly situated, looks good. Forks look good. When a helper pushes clutch pedal I can push against the bearing and feel pressure. All looks good. It moves ok when pedal pressed.
I am now going to clean everything up again with brake cleaner and re install.
There is no writing on the clutch plate to show which way round it goes. According to all diagrams the flat surface faces flywheel?
Is there a right way and wrong way to bolt pressure plate back on? I assumed that as long as It matches the dowels, all good?
Lastly I had a look at the spigot bearing, seems to turn ok with my finger. The small felt bit that goes around it though is maybe a little bit uneven, but I can’t see a piece of felt putting up that much resistance.

Hope its all good for you this time but the Haynes manual says - if the friction linings are black in appearance ( indicating oil contamination ) the disc must be renewed.

Has the friction plate warped?

I think I have cracked it!
I took the box off again and the clutch. When I picked it up a stone fell out! I think this might have been jamming the springs on the pressure plate. I am not 100% sure if it was in there all along or it was scooped up just after I took it off and put it on ground.
I cleaned up clutch with brake cleaner and put it all back together -all good,was able to select first and second and move back and forward!
There was some collateral damage,I pulled wires from the rear of the alternator, a vacuum hose and a fuel line. Trying to work out which way round the wires in alternator go!
Thanks for the advice